illegal alien

基本解释

All the followers of Jesus,according to this writer, live in the Roman Empire as illegal aliens basically, or not illegal aliens but definitely as aliens.
根據這個作者，所有耶穌的追隨者，基本上都是作爲非法入境者生活在羅馬帝國，或者不是非法入境者，但肯定是外邦人。
Hostility towards Mexicans spread to the United States where talkshows referred to "fajita flu" and "infected illegal aliens", injecting fresh rancour into the immigration debate.
對墨西哥人的敵意也開始在美國擴散。一些脫口秀用到“法士達流感”（譯者：法士達，即墨西哥肉卷，在此帶有一定侮辱性）和“被感染的非法移民”等稱呼。
With a multiple entry visa, no one needs to stay in America as illegal aliens, and the US visa department will not need to reject them based on their possible intent of not leaving the USA.
有了多次入境的簽証，沒有人需要畱住在美國做非法居畱的外國人，而美國簽証部門也將不再需要以他們可能意圖不離開美國爲由而拒絕他們簽証。

They also demanded the President issue a moratorium on deportation and detention of suspected illegal aliens until federal immigration reform is passed.
and especially the way that we treat illegal aliens.
尤其是改變一下我們對待非法移民的方式。
美國的移民法 - SpeakingMax英語口語達人

Illegal aliens could potentially add millions to the shrinking ranks of America's labor unions.
FORBES: Labor Won't Embrace Immigrants
Further, we must be watchful of illegal aliens voting in current and the presidential race.
FORBES: U.S. Needs Immigration Reform

someone who lives or works in another country when they do not have the legal right to do this